系统辨识的大作业，该word文档中包含对象描述、分析、测试、辨识结果对比、附录程序。对比了工程法辨识、最小二乘辨识方法的差异。以供后来者学习。编程环境为matlab.-Large operating system identification, word document contains the object descr iption, analysis, testing, identification results contrast Appendix procedures. Comparing the difference between project identification method, least squares identification method. For newcomers to learn. Programming environment for matlab.